Nisshinbo Micro Devices NJR4274 User manual

Date
January 24,2022
Specifications / User Manual
24GHz Sensor Module
Model No. NJR4274
Copyright ©
Nisshinbo Micro Devices Inc.
Microwave Business Headquarters
-Notice of Proprietary Information-
This document and contents are proprietary to Nisshinbo Micro Devices Inc.
This publication and contents may not be reproduced or distributed for any other purpose
without the written permission of Nisshinbo Micro Devices Inc.
Specifications listed in this document are subject to change at any time, without notice.
Nisshinbo Micro Devices Inc.
Microwave Business Headquarters
Title:
Specifications of NJR4274 for Radio Certification
Reference No.:
PDS-R4274
Rev.:
00-06E
Sheet:
1 / 14
For Radio Certification

NJR4274
＊Above specifications are subject to change without notice.
Reference No.:
PDS-R4274
Rev.:
00-06E
Sheet:
2
Scope
NJR4274 K-band (24GHz) Doppler Module has been designed for motion sensing applications.
Main Structure
Integrated antenna structure, the patch antenna is integrated on the module PCB.
All of electric parts except interface connector are covered with metal cap.
Operation Overview
5 V input operation, LDO integrated.
Implemented an internal MCU for RF frequency tuning of RF-IC and intermittent-operation.
Internal MCU controls ON/OFF of Output voltage from LDO which connect to the input voltage
terminal of RF IC.
This module is 2-frequencies CW (FSK) type sensor that can simultaneously measure the distance
and velocity of the moving target. It operates duty cycle of intermittent-operation has 2-operation-
mode (Normal operation mode / Low power operation mode). 2-operation-mode are different duty
cycle. (refer Fig.2)
RF frequency is output during ON time.
Internal MCU supplies the tuning voltage to RFIC and the RF frequency is controlled by tuning voltage.
Since the RF frequency is switched every intermittent-operation cycle, the tuning voltage is switched
every cycle.
Switched RF frequency is 2-frequencies, and difference of those 2-frequencies is 15 MHz +/- 3 MHz.
Fig.1 Functional Block Diagram

NJR4274
＊Above specifications are subject to change without notice.
Reference No.:
PDS-R4274
Rev.:
00-06E
Sheet:
3
Electrical Specifications
ITEM
MIN.
TYP.
MAX.
UNITS
REMARKS
1.1. Power Supply
(1) Operating Voltage
4.75
5
5.25
V
(2) Operating Current
Normal Operation Mode
―
―
50
mA
Low Power Mode
―
―
6
mA
1.2. RF Parameter
(1) RF Frequency (Transmission)
for US, Canada, Taiwan
and Korea
24.05
―
24.25
GHz
Refer Chart 1.
(2) Transmission Operation
Mode
2-Frequencies CW(FSK)
(3) Frequency Difference
of FSK
―
15
―
MHz
(4) Output Power
―
1.8
―
dBm
(5) E.I.R.P.
―
―
10
(10)
mW
(dBm)
(7) Spurious Emission
―
―
2,500
uW/m
(8) Antenna.
Antenna Gain
―
6.5
6.7
dBi
-3dB beam width / Horizontal
―
45
―
deg.
-3dB beam width / Vertical
―
40
―
deg.

NJR4274
＊Above specifications are subject to change without notice.
Reference No.:
PDS-R4274
Rev.:
00-06E
Sheet:
4
Chart 1. Frequency Channel List

NJR4274
＊Above specifications are subject to change without notice.
Reference No.:
PDS-R4274
Rev.:
00-06E
Sheet:
5
Normal Operation Mode
Notes: In normal mode, the modules transmit alternately at frequencies F1 and F2.
A period of F1 and F2 has each 500us. Both transmit ON-time is 47us,
OFF-times is 453us. F2 is started to transmit delayed 250us
after F1 transmit.
Low Power Operation Mode
Notes: In Low Power Operation mode, the modules transmit alternately
at frequencies F1 and F2.
A period of F1 and F2 has each 10ms nominal, range 9 to 11ms.
Both transmit ON-time is 47us, F2 is started to transmit delayed
250us after F1 transmit.
Fig.2 Frequency Time Chart

NJR4274
＊Above specifications are subject to change without notice.
Reference No.:
PDS-R4274
Rev.:
00-06E
Sheet:
6
1. Environmental Specifications
ITEM
SPECIFICATION
Operation Temperature
-10 to +41 °C
Storage Temperature
-30 to +70 °C
Humidity
0 to 64 % @+41 °C

NJR4274
＊Above specifications are subject to change without notice.
Reference No.:
PDS-R4274
Rev.:
00-06E
Sheet:
7
2. Drawing
2.1. Outline
2.2. Interface
(1) Connector: BM07B-GHS-TBT / J. S. T. MFG. CO., LTD.
(2) Pin Assignment
#
NAME
I/O
DESCRIPTION
1
Vcc
I
+5 V Input
2
TxD
O
Serial Communication
Tx Port
3
RxD
I
Serial Communication
Rx Port
4
GND
―
GND
5
TxD
O
Serial Communication
Internal AD value is output
6
N/A
I
Do not connect, Internal Usage
7
N/A
I
Do not connect, Internal Usage

NJR4274
＊Above specifications are subject to change without notice.
Reference No.:
PDS-R4274
Rev.:
00-06E
Sheet:
8
2.3. Label Drawing

NJR4274
＊Above specifications are subject to change without notice.
Reference No.:
PDS-R4274
Rev.:
00-06E
Sheet:
9
1. Nissinbo Micro Devices strives to produce reliable and high quality microwave components.
Nissinbo Micro Devices's microwave components are intended for specific applications and
require proper maintenance and handling. To enhance the performance and service of Nissinbo
Micro Devices's microwave components, the devices, machinery or equipment into which they
are integrated should undergo preventative maintenance and inspection at regularly scheduled
intervals. Failure to properly maintain equipment and machinery incorporating these products
can result in catastrophic system failures.
2. To ensure the highest levels of reliability, Nissinbo Micro Devices products must always be
properly handled. The introduction of external contaminants (e.g. dust, oil or cosmetics) can
result in failures of microwave components.
3. Nissinbo Micro Devices offers a variety of microwave components intended for particular
applications. It is important that you select the proper component for your intended application.
You may contact Nissinbo Micro Devices 's sales office or sales representatives, if you are
uncertain about the products listed in the catalog and the specification sheets.
4. Special care is required in designing devices, machinery or equipment, which demand high levels
of reliability. This is particularly important when designing critical components or systems whose
foreseeable failure can result in situations that could adversely affect health or safety. In
designing such critical devices, equipment or machinery, careful consideration should be given
to, amongst other things, their safety design, fail-safe design, back-up and redundancy systems,
and diffusion design.
Caution

NJR4274
＊Above specifications are subject to change without notice.
Reference No.:
PDS-R4274
Rev.:
00-06E
Sheet:
10
5. The products listed in the catalog and specification sheets may not be appropriate for use in
certain equipment where reliability is critical or where the products may be subjected to extreme
conditions. You should consult our sales office or sales representatives before using the products
in any of the following types of equipment.
* Aerospace Equipment
* Equipment Used in the Deep Sea
* Power Generator Control Equipment (nuclear, steam, hydraulic)
* Life Maintenance Medical Equipment
* Fire Alarm/Intruder Detector
* Vehicle Control Equipment (automobile, airplane, railroad, ship, etc.)
* Various Safety Equipment
This sensor module is NOT intended to be used in motor vehicles nor aircraft.
Additional considerations are required for use in such environments.
You (i.e. Host integrator of this module) must consult detail our sales office or sales
representatives beforehand.
6. Nissinbo Micro Devices 's products have been designed and tested to function within controlled
environmental conditions. Do not use products under conditions that deviate from methods or
applications specified in the catalog and specification sheets. Failure to employ Nissinbo Micro
Devices 's products in the proper applications can lead to deterioration, destruction or failure of
the products. Nissinbo Micro Devices shall not be responsible for any bodily injury, fires or accidents,
property damage or any consequential damages resulting from the misuse or misapplication of its
products. PRODUCTS ARE SOLD WITHOUT WARRANTY OF ANY OF KIND, EITHER EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO ANY IMPLIED WARRANTY OF MERCHANTABILITY OR
FITNESS FOR A PARTICULAR PURPOSE.
7. The product specifications and descriptions listed in the catalog and specification sheets are subject
to change at any time, without notice.

NJR4274
＊Above specifications are subject to change without notice.
Reference No.:
PDS-R4274
Rev.:
00-06E
Sheet:
11
FCC Statement
Appendix)
FCC Statements of 2ACUJR4274
Responsible party:
Nissinbo Micro Device Inc.
1-1, Fukuoka 2-Chome Fujimino-City
Saitama Prefecture 356-8510 Japan
Tel: [phone], Fax: [phone]
This device complies with Part 15 of the FCC rules. Operation is a subject to the following two conditions:
(1) This device may not cause harmful interference.
(2) This device must accept any interference received, including interference that may cause
undesired operation.
Caution
DC power supply for each module should be conformed to the electrical specifications as described
in this section. A host in which a module is integrated should provide stable DC power through
suitable regulator circuit to the module.
NOTE:
Changes or modifications to the device not expressly approved by the party responsible for
compliance could void the user’s authority to operate the equipment(s).
This equipment has been tested and found to comply with the limits for a Class B digital device,
pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection
against harmful interference in a residential installation. This equipment generates, uses and can
radiate radio frequency energy and, if not installed and used in accordance with the instructions, may
cause harmful interference to radio communications. However, there is no guarantee that interference
will not occur in a particular installation. If this equipment does cause harmful interference to radio or
television reception, which can be determined by turning the equipment off and on, the user is
encouraged to try to correct the interference by one or more of the following measures:
- Reorient or relocate the receiving antenna.
- Increase the separation between the equipment and receiver.
- Connect the equipment into an outlet on a circuit different from that to which
the receiver is connected.
- Consult the dealer or an experienced radio/TV technician for help.
The equipment complies with radio frequency exposure limits set forth by the FCC for an uncontrolled
environment.
The device must not be co-located or operating in conjunction with any other antenna or transmitter.

NJR4274
＊Above specifications are subject to change without notice.
Reference No.:
PDS-R4274
Rev.:
00-06E
Sheet:
12
Appedix)
WARNING:
The FCC regulations provide that changes or modifications not expressly approved by the party
responsible for compliance could void the user’s authority to operate the equipment.
Limitation for use of the modules:
When the module is installed in a host product, the module shall be connected directly to a PCB of
the host product. It shall NOT be extended by any cable. DC power supply for each module must
strictly be conformed to each electrical specification as described in the section 1 of this document.
Manual and Product Labeling information to the End User:
End user manual must include all required regulatory information and/or warning as show in this
manual.
OEM Integrator must indicate "Contain FCC ID: 2ACUJR4274" at the outside of a host product
such as label when the module is installed in the host product.
The following statement from FCC §15.19(a)(3) is required on the label of the host equipment.
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two
conditions:
(1) this device may not cause harmful interference, and
(2) this device must accept any interference received, including interference that may
cause undesired operation.
OEM Integrator may be sure that the End user manual may not contain any information about the way
to install or remove the modules from the host product.
APPLICABLE MODEL:
This FCC Statement is valid only for the following model number:
NJR4274

NJR4274
＊Above specifications are subject to change without notice.
Reference No.:
PDS-R4274
Rev.:
00-06E
Sheet:
13
ISED Statement
Note:
This device complies with Industry Canada’s license-exempt RSSs. Operation is subject to the following two
conditions:
(1) this device may not cause interference; and
(2) this device must accept any interference, including interference that may cause undesired
operation of the device.
Le présent appareil est conforme aux CNR d'Industrie Canada applicables aux appareils radio exempts de
licence. L'exploitation est autorisée aux deux conditions suivantes:
(1) l'appareil ne doit pas produire de brouillage;
(2) l'utilisateur de l'appareil doit accepter tout brouillage radioélectrique subi, même si le
brouillage est susceptible d'en compromettre le fonctionnement.
Manual and Product Labeling information to The End User:
The end user manual shall include all required regulatory information/warning as show in this manual.
And when this module is installed in the host product, you must include a "Contains IC: 22589-R4274" in the
label of the host product.

NJR4274
＊Above specifications are subject to change without notice.
Reference No.:
PDS-R4274
Rev.:
00-06E
Sheet:
14
RF Exposure Statement (For FCC)
This equipment complies with radio frequency exposure limits set forth by the FCC for an uncontrolled
environment. This equipment should be installed and operated with a minimum distance of 2.0 cm between the
device and the user or bystanders. This device must not be co-located or operating in conjunction with any
other antenna or transmitter.

NJR4274
＊Above specifications are subject to change without notice.
Reference No.:
PDS-R4274
Rev.:
00-06E
Sheet:
15
RF Exposure Statement (For ISED)
This equipment complies with radio frequency exposure limits set forth by Industry Canada for an uncontrolled
environment. This equipment should be installed and operated with a minimum distance of 5.0 cm between the
device and the user or bystanders. This device must not be co-located or operating in conjunction with any
other antenna or transmitter.
Cet équipement est conforme aux limites d'exposition aux radiofréquences définies par Industrie Canada pour
un environnement non contrôlé. Cet équipement doit être installéet utiliséavec un minimum de 5.0 cm de
distance entre le dispositif et l'utilisateur ou des tiers. Ce dispositif ne doit pas être utiliséàproxi